A phonological processing disorder involves patterns of sound errors (ex. Substituting the “t” sound for the “k” sound consistently in all positions or when a word begins with a blend, omitting one of the sounds). While it is common for young children to have these errors, it is not expected as a child gets older. If the phonological process persists past when it is expected to be gone, the child may have a phonological processing disorder. Speech therapy for phonological processes will often target a class of sounds (EX. The “k” sound and “g” sound simultaneously).